From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp-out-no.shaw.ca (smtp-out-no.shaw.ca [64.59.134.12]) by sourceware.org (Postfix) with ESMTPS id B0F083851C3D for ; Thu, 17 Dec 2020 21:09:59 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org B0F083851C3D Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=SystematicSw.ab.ca Authentication-Results: sourceware.org; spf=none smtp.mailfrom=brian.inglis@systematicsw.ab.ca Received: from [192.168.1.104] ([24.64.172.44]) by shaw.ca with ESMTP id q0X7kTbsPtdldq0X8kTXUp; Thu, 17 Dec 2020 14:09:58 -0700 X-Authority-Analysis: v=2.4 cv=INe8tijG c=1 sm=1 tr=0 ts=5fdbc926 a=kiZT5GMN3KAWqtYcXc+/4Q==:117 a=kiZT5GMN3KAWqtYcXc+/4Q==:17 a=IkcTkHD0fZMA:10 a=9h7hh5lF9p_-Fxzi9ecA:9 a=QEXdDO2ut3YA:10 Reply-To: cygwin@cygwin.com To: cygwin@cygwin.com References: <5dde4c43-e438-a4b3-95c9-097f395066bd.ref@bellsouth.net> <5dde4c43-e438-a4b3-95c9-097f395066bd@bellsouth.net> From: Brian Inglis Organization: Systematic Software Subject: Re: sshd broken by seemingly trivial network change Message-ID: <79283c3c-442e-06b9-3a45-1e74d509b92b@SystematicSw.ab.ca> Date: Thu, 17 Dec 2020 14:09:57 -0700 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.6.0 MIME-Version: 1.0 In-Reply-To: <5dde4c43-e438-a4b3-95c9-097f395066bd@bellsouth.net> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-CA Content-Transfer-Encoding: 8bit X-CMAE-Envelope: MS4xfADWQTp1H/kiLMyRhLQPSGYqCVtNVmtLuLKaTyPrA1MlVE1/bRcPCCROTyvAdYLChqW6lhBGqzfzfDtF7tdoU0MYHEYfun+v2oYGJlrwtD32MbMstASE 5q3rTA+O+lHfQvOIUD2FmBziXW9NhLJeeNQgdbhMj7o7x1TpJuNNeDFhcMhmL6RLAd10GH2duUYAA+rg1WdpJmkjwBa5y+n5nB8= X-Spam-Status: No, score=-6.1 required=5.0 tests=BAYES_00, KAM_DMARC_STATUS, KAM_LAZY_DOMAIN_SECURITY, NICE_REPLY_A, RCVD_IN_DNSWL_LOW, RCVD_IN_MSPIKE_H3, RCVD_IN_MSPIKE_WL, SPF_HELO_NONE, SPF_NONE, TXREP autolearn=no autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: cygwin@cygwin.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: General Cygwin discussions and problem reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 17 Dec 2020 21:10:02 -0000 On 2020-12-17 13:51, Charles Russell wrote: > On 12/17/2020 11:49 AM, Bill Stewart wrote: >> Make sure to look carefully through all of the firewall rules and >> check whether there is a rule blocking that executable or port. > Selecting "Advanced Settings" and then "incoming rules", I see one rule for sshd > private: enabled, allowed and one rule for sshd public: enabled, allowed. There > is a third rule for sshd domain: (disabled, allowed). I believe that one is > irrelevant but I enabled it anyway, which did not help. > > Is there someplace else I should look? This is Windows 7 Home Premium. Have you checked your new router to see what default rules are enabled there? Some routers may come with blocks for common attack vectors, against the router itself or the local network, that may need to be disabled if you want to allow connections from other systems. The router may have been setup or used by the selling org, or a customer, and returned and resold. -- Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada This email may be disturbing to some readers as it contains too much technical detail. Reader discretion is advised. [Data in binary units and prefixes, physical quantities in SI.]